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Science Assertion - Reasoning (1 Marks)

MODEL PAPER - 3 [2026] · CBSE STD 10 (CBSE - English Medium). 2 questions.

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Assertion - Reasoning (1 Marks)

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2 questions · timed · auto-graded

Question 11 Mark
Assertion (A): Producers are capable of using light energy from the sun to make food available in an ecosystem.
Reason (R): All food chains in an ecosystem start with a producer.
Answer
(B) Both A and R are true but R is not the correct explanation of A .Explanation:
Both A and R are true but R is not the correct explanation of A .
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Question 21 Mark
Assertion (A): Amoeba takes in food using finger like extensions of the cell surface.
Reason (R): In all unicellular organisms, the food is taken in by the entire cell surface.
Answer
(B) Both A and R are true but R is not the correct explanation of A .
Explanation: An amoeba catches food via pseudopodia, which are finger-like extensions of its cytoplasm. The food particle is subsequently consumed by encasing it in the cell membrane and internalising it, a process known as phagocytosis. Food is consumed by the entire surface of unicellular organisms.
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Assertion - Reasoning (1 Marks) - Science STD 10 Questions - Vidyadip